package com.sky.controller.user;

import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.service.impl.DishServiceImpl;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;
@Slf4j
@RestController("userDishController")
@RequestMapping("/user/dish")
@Api(tags = "C端菜品相关接口")
public class DishController {
    @Autowired
    private DishServiceImpl dishService;
    @Autowired
    private RedisTemplate redisTemplate;

    // 根据分类id查询菜品
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> list(Long categoryId) {
        // 构造redis的key
        String key="dish_"+categoryId;
        //查询redis中是否有菜品数据
        List<DishVO> dishVOList = (List<DishVO>) redisTemplate.opsForValue().get(key);
        //如果存在，直接返回
        if(dishVOList != null && dishVOList.size() > 0){
            return Result.success(dishVOList);
        }
        //如果不存在，查询数据库，将数据保存到redis中，然后返回
        List<DishVO> list = dishService.listWithFlavor(categoryId);
        redisTemplate.opsForValue().set(key,list);
        return Result.success(list);
    }
}
